MS Word - program version compatibility problems that make Poser look like a saint. Also has many irritating bugs within the program itself. Pagemaker - why, oh why, can't this mostly wonderful program recognize and use certain fonts? No, not funky ones, common ones, like, oh, say, Arial! Powerpoint - occasional, noticable bugs. Photoshop - memory hog, occasional bugs. Sorry (to disagree and for staying OT), but I work with these every day on the job, and they are all guilty of putting cuss words in my mouth :) I've listed them from worst to best. Poser only injects me with cuss words when I run into the light/shadowcam bugs. It opens older files in newer versions, and older versions will often open newer version files rather well. The UI could be trimmed to a more normal standard look. It could also use a few new import/export formats. Overall, using Poser is enjoyable.